Acquired pursuant to a dividend reinvestment feature of the issuer's non-employee directors' stock incentive plan in connection with restricted stock units held by the reporting person.

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2)

Phantom stock is reported in units vs. shares in the D&B Common Stock Fund of the issuer's non-employee directors' deferred compensation plan (the "Plan").

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3)

Each phantom stock unit entitles the reporting person to a cash payment based on the value on the payout date of the issuer's common stock corresponding to such units. Based on the $100.17 closing price of the issuer's common stock on the transaction date, each unit corresponds to approximately 2.67 shares.

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4)

The reporting person may transfer these phantom stock units to alternative investment funds in the Plan.

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5)

These phantom stock units are payable in cash after the reporting person ceases to be a member of the issuer's board of directors.

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6)

Each phantom stock unit represents the right to receive one share of the issuer's common stock.

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7)

These phantom stock units are payable in shares after the reporting person ceases to be a member of the issuer's board of directors.